<template>
  <div class="tab-bar-item" @click="itemClick">
    <!-- 图片插槽 -->
    <div v-if="!isActive"> <slot name="item-icon"></slot> </div>
    <!-- 活跃图片图片插槽 -->
    <div v-else> <slot name="item-icon-active"></slot> </div>
    <!-- 内容插槽 -->
    <div :style="activeStyle"> <slot name="item-text"></slot> </div>
  </div>
</template>

<script>
  export default {
    name: "TabBarItem",
    props: {
      path: String,
      activeColor: {
        type: String,
        default: 'red'
      }
    },
    data() {
      return {
        // isActive: true
      }
    },
    computed: {
      isActive() {
        // 动态决定路由是否处于活跃状态
        return this.$route.path.indexOf(this.path) !== -1;
      },
      // 动态决定样式
      activeStyle() {
        return this.isActive ? {color: this.activeColor} : {}
      }
    },
    methods: {
      itemClick() {
        this.$router.replace(this.path)
      }
    }
  }
</script>

<style scoped>
  .tab-bar-item {
    flex: 1;
    text-align: center;
    height: 49px;
    font-size: 14px;
  }
  .tab-bar-item img {
    width: 24px;
    height: 24px;
    /* 去掉图片默认的像素 */
    vertical-align: middle;
    margin-bottom: 2px;
  }
  .active {
    color: #1AF827;
  }
</style>
